Locomotive stoker



Filed July 11 1928 2 Sheets-Sheet 2 m R 7 I llllllllll I NN IIIIIIIIIIII/IIIIIIII- IIIIIIIIIIIIIIIIIllIIIIIlIIIIl/IllIII -,"I",nnnnnulunn11,

Patented May 27, 1930 UNITED STATES-PATENT OFFICE- EWIN ARCHER TURNER, OF NEW YORK, N. Y., ASSIGNOR TO THE STANDARD STOKER COMPANY, INOORPORATED, A. CORPORATION 01 DELAWARE I Locomo'rIvn 'sroxnn Application filed July 11,

This invention relates to locomotive stokers of the scatter feed type in which fuel is conveyed from the tender to the locomotive and delivered through the backhead thereof 5 above the level of the firebed, and scattered thereover. I

The objects ofthe present invention are to simplify and improve stokers of this type, generally, and more specifically to improve the various details of construction.

This application is a continuation in part of my 4 rior application for Locomotive stoker, ed April 28, 1926, Serial No.

05,164, Patent No. 1,711,466, granted April 1 30, 1929, and the preferred embodiments of the invention are hereinafter described and are illustrated in the accompanying drawings in which Fig. 1 is a detail vertical longitudinal sec- 20 tion of the locomotive and its tender,.and of the Stoker; v c

Fig. 2 is a detail vertical longitudinal section of the stoker mechanism and backhead of the boiler, showing a modified form of 25 construction, and v Fig. 3 is a plan section on line 3-3 of Fig. 1.

The backhead of the locomotive is re resented at 10, and its grates at 11. Poftlons of the tender are shown at 12, and the coupling uniting locomotive and tender M13.

The stoker illustrated in Figs. 1 and 3 comrises a transfer conduit '14 adapted to. be edlysecured to the tender below the floor thereof, whichis suitably apertured in any well known manner to permit the coal carried in the fuel bin to be discharged into the conduit. A crushing member 16 is shown as arching over the forward end of the conduit 14. Within this conduit there islocated a suitable device as the helical screwl? for advancing the fuel. 7

At the forward end of the conduit 14 which terminates adjacent the forward end of the tender, is located one section of a hollow ball joint 18, the other section 19 thereof being carried by one part of a conduit 20. Theconduit 20 comprises the section 21 which carries the ball joint section 19, 60 and the section 22, the two sections 21, 22

1928. Serial No. 292,007.

being in telescopic engagement and ada ted to freely slide, the one within the ot er.- The forward end of the conduit 20 as shown has formed thereon a hollow ball joint section 23, which if desired may be securely attached to the conduit 20 in any suitable manner,"carried by the ball seat 24, and held in position therein by the ball joint clamps 25 of the delivery nozzle or upwardly extending conduit 26 which is fixedly attached to the backhead 10. The delivery nozzle extends upwardly from the forward end of the conduit 20 to and is in communication with, the lower portion of the firing opening 27 of the backhead 10 and delivers thea fuel upon a distributor plate 28 fixed within this opening and pro ecting into the firebox. A helical screw 29 housed within the conduit 20 and connected with the rear screw 17 by a universal joint 30 advances the fuel and forces it through e delivery nozzle 26.

The distributor pla e 28 as shown is cast integral with the delivery nozzle 26 but may be made a detachable unit in any well known manner. A steam nipple 31 is located at the rearward end of the distributor plate and is arranged to discharge one or more steam jets over the surface of the late for the purpose of sweeping the fuel t erefrom into the firebox and scattering it over the grate area, the plate being rovided with suitable ribs 32 for giving direction to the fuel. One or more steam pipes 33 lead from the steam nipples 31 to any suitable source of supply.

The lower and rearward circular portion of the delivery nozzle 26 which forms part of the ball joint connection indicated genorally .at 34 extends, downwardly from the delivery end of the nozzle, which is in communication with the firing opening, a sufficient distance to locate the joint 34 below the floor or deck 35 of the locomotive cab. The

forward end of the inclined conveyor 20 and the least distance thatit is necessary In the modified form of the invention shown in Fig. 2, the delivery nozzle or the upwardly extending conduit 260 is provided with a gradually curving forward wall 36 which facilitates the passage of fuel there- .through by offering the minimum amount of resistance to the delivery of fuel'from the end of the screw 29. In all other respects the details of the device may be the same as in the previously described form. v

The fuel delivery nozzles 26 and 260 may be made of greater width and less vertical dimensions'than the diameter of the conduit with which they co-operate, and consequently. occupy but a small portion of the firing opening; of the backhead. V y providing a transfer conduit below the floor of the tender and terminating it at the forward end thereof, a delivery'nozzle fixedly attached to the locomotive backhead and extending downwardly from the firing. opening the minimum distance necessary for its .lower circular end to be below the cab deck,

and an inclined conveyor having telescopic sections universally connected to each of said parts, it will be recognized that all moving parts of the stoker are below the cab deck and that, for a construction of the type disclosed, the fuel is conveyed to the firing opening of the firebox in the most direct line of delivery to force the fuel from the end of the incllned conveyor member.

From the foregoing it will be seen that I have provided a simple combination of parts that is compact in form and readily applicable to existing types of locomotives or to other steam boilers. v

I claim a 1. In combination, a locomotive having a tender and a firebox provided with a hand firing opening, a transfer and delivery conduit comprising a section located under the tender floor, a nozzle attached to the backhead of the locomotive and delivering through the hand-firing opening therein, and a section universally jointed to said. nozzle and to said section.

2. In combination, a locomotive hav' a tender and a firebox provided with a firing opening, a transfer conduit located below the floor of and terminating adjacent the forward end of said tender, a nozzle attached to the backhead of the locomotive and delivering through said opening therein, and a fuel conduit comprising relatively slidin telescoping sections universally connected the forwardend of said transfer conduit and with-said nozzle.

3. In combination, a locomotive and a tender therefor, said locomotive being provided with a backhead having'an opening therein, a stoker comprising'a transfer conduit located under the tender floor and terminating at its forward end, a nozzle rigidly with attached to the backhead of the locomotive and delivering to said opening, a fuel conduit communicating with and flexibly connected at each end to, and having means for providing longitudinal; movement between, said transfer conveyor and said nozzle, and

a helical screw comprising rear and forward sections, the rear section mounted in said transfer conduit and the forward section mounted within said fuel conduit, said sections universally connected together.

4. In combination, with an in'tercoupled locomotive and tender, the former having a fire grate and the latter a fuel bunker, a flexible conduit having'one end ortion fixed to the tender and the other fixe to thelocomotive and the former adapted-to receive fuel from the bunker and the latter bent upward and itself adapted to deliver the fuel at or above the fire level, and a revoluble screw extendin len hwise of and adapted to propel the uel rom the fuel-receiving to the fuel-delivery point of the conduit and having but a single universally flexible joint within the length of its spiral fuel-advancing portion and having the forward terminus of said spiral portion located at. substantially the bend in said conduit, said conduit being flexible in approximate coincidence with said joint and also with said terminus.

5. In combination, a locomotive having a firebox provided with a hand firing opemn in the. back wall thereof, a tender for said locomotive, a single continuous conduit for transferring fuel from said tender to said locomotive, said conduit comprising a trough section rigidly mounted beneath the'floor'of said tender and adapted to receive fuel therefrom, a nozzle section rigidly mounted on Said locomotive for deliveringfuel to said firing opening and having its lower end exin end to end relation therewith, means for flexibly connecting the rear end of said intermediate section to the forward end of said trough section in end to end relation therewith, and a screw conveyor member within said conduit and constituting the sole. meansv for moving fuel along the same, said member terminating at its forward end in the lower portion of said nozzle section and comprising aplurality of screw sections flexibly connected together. I

6. .In combination, a locomotive ha a tender and a firebox provided with a firing opening, a transfer conduit fixed to the loco motive tender, a second conduit comprising relatively sliding telescopingsections, and a delivery nozzle cooperating with said opening, the rearward section of said secon conduit being universally jointed to the first named conduit-and the forward section connected to said nozzle by a universal joint.

7. In combination, a locomotive having a tender and a firebox provided with a backhead having a firing opening therein, a transfer conduit fixed to the locomotive tender, a

second conduit comprising relatively sliding telescoping sections, and a delivery nozzle cooperating with said firing opening and being fixed to said backhead, the rearward section of said second conduit being universally jointed to the first named conduit and the forward section being connected to said nozzle by a universal joint.

8. In combination, a locomotive and a tender therefor, said locomotive being pro-.

vided with a backhead having a firing opening therein, a stoker comprising a transfer conduit located under and terminating adj acent the forward end of the floor of said tender, a nozzle fixedly attached to the backhead of the locomotive and delivering through said opening, and a fuelconduit communicating with and flexibly connected at its ends in end to end relation to, and

having means for providing longitudinal movement between said transfer conveyor and said nozzle.

In testimony whereof I aflix my signature.

E. ARCHER TURNER. 

